<template>
  <view>
    <view class="search-box">
      <uni-search-bar :radius="50" @input="input" cancelButton='none'></uni-search-bar>
    </view>
    
    <!-- 搜索建议列表 -->
    <view class="suggest-list" v-if="searchResult.length!==0">
      <view class="suggest-item" v-for="(item,i) in searchResult" :key="i" @click="gotoGoodsDetail(item)">
        <view class="goods-name">
          {{item.goods_name}}
        </view>
        <uni-icons type="arrow-right" size="16"></uni-icons>
      </view>
    </view>
    
    <!-- 搜索历史记录 -->
    <view class="history-box" v-else>
      <view class="history-title">
        <text>搜索历史</text>
        <uni-icons type="trash" size="17" @click="clean"></uni-icons>
      </view>
      <view class="history-item">
        <uni-tag :text="item"  v-for="(item,i) in histories" inverted='true' @click="gotoGoodsList(item)"></uni-tag>
      </view>
    </view>
    
    
    
  </view>
</template>

<script>
  export default {
    data() {
      return {
        timer:null,
        kw:'',
        searchResult:[],
        historyList:['a','b','c']
      }
      
    },
    onLoad() {
     this.historyList=JSON.parse(uni.getStorageSync('kw'|| '[]')) 
    },
    methods:{
      // 搜索
      input(e){
        clearTimeout(this.timer)
       this.timer= setTimeout(()=>{
         this.kw=e
         this.searchQuery()
        },500)
      },
     async searchQuery(){
        if(this.kw.length==0) return this.searchResult=[]
      const{data:res}= await uni.$http.get('/api/public/v1/goods/qsearch',{
          query:this.kw
        })
        if(res.meta.status!==200) return ni.$showMsg()
        this.searchResult=res.message
        this.saveSearchHistory()
      },
      saveSearchHistory(){
       // this.historyList.push(this.kw)
      let set= new Set(this.historyList)
      set.delete(this.kw)
      set.add(this.kw)
      this.historyList=Array.from(set)
      uni.setStorageSync('kw',JSON.stringify(this.historyList))
      },
      gotoGoodsDetail(item){
        console.log(item)
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id='+item.goods_id
        })
      },
      clean(){
        this.historyList=[]
        uni.setStorageSync('kw','[]')
      },
      gotoGoodsList(item){
        uni.navigateTo({
          url:"/subpkg/goods-list/goods-list?query="+item
        })
      }
    },
    computed:{
      histories(){
        return [...this.historyList].reverse()
      }
    }
    
  }
</script>

<style lang="scss">
.search-box{
  position: sticky;
  top:0;
  z-index: 999;
}
.suggest-list{
  padding: 0 10px;
  .suggest-item{
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: 13px 0;
    border-bottom:1px solid #efefef;
    .goods-name{
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      margin-right: 5px;
    }
  }
}
.history-box{
  padding: 0 10px;
  .history-title{
    height: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: solid 1px #efefef;
  }
  .history-item{
    display: flex;
    flex-wrap: wrap;
    uni-tag{
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}
</style>
